Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5675691 | Diffraction gratings in optical waveguide components and production method thereof | Helmut Rudigier | 1997-10-07 |
| 5667700 | Process for the fabrication of a structural and optical element | Helmut Rudigier | 1997-09-16 |